Extended Data Fig. 5: Spectroscopic models III and IV.
From: Formation of the methyl cation by photochemistry in a protoplanetary disk
a, Model III, with zoom on the strongest lines (b). c, Model IV, with zoom on the strongest lines (d). For these models, the excitation temperature is T = 400 K, and we use a Gaussian profile of 0.35 cm−1 full-width-at-half-maximum.
